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AD7195BCPZ-RL7 Arkusz danych(PDF) 2 Page - Analog Devices |
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AD7195BCPZ-RL7 Arkusz danych(HTML) 2 Page - Analog Devices |
2 / 44 page AD7195 Rev. 0 | Page 2 of 44 TABLE OF CONTENTS Features .............................................................................................. 1 Interface ............................................................................................. 1 Applications....................................................................................... 1 General Description ......................................................................... 1 Functional Block Diagram .............................................................. 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 Timing Characteristics ................................................................ 6 Absolute Maximum Ratings............................................................ 8 Thermal Resistance ...................................................................... 8 ESD Caution.................................................................................. 8 Pin Configuration and Function Descriptions............................. 9 Typical Performance Characteristics ........................................... 11 RMS Noise and Resolution............................................................ 13 Sinc4 Chop Disabled................................................................... 13 Sinc3 Chop Disabled................................................................... 14 Sinc4 Chop Enabled.................................................................... 15 Sinc3 Chop Enabled.................................................................... 16 On-Chip Registers .......................................................................... 17 Communications Register......................................................... 18 Status Register ............................................................................. 19 Mode Register ............................................................................. 19 Configuration Register .............................................................. 21 Data Register ............................................................................... 23 ID Register................................................................................... 23 GPOCON Register ..................................................................... 23 Offset Register............................................................................. 24 Full-Scale Register ...................................................................... 24 ADC Circuit Information.............................................................. 25 Overview ..................................................................................... 25 Analog Input Channel ............................................................... 26 PGA.............................................................................................. 26 Reference ..................................................................................... 26 Reference Detect......................................................................... 26 Bipolar/Unipolar Configuration .............................................. 27 Data Output Coding .................................................................. 27 Burnout Currents ....................................................................... 27 AC Excitation.............................................................................. 27 Channel Sequencer .................................................................... 28 Digital Interface.......................................................................... 28 Reset ............................................................................................. 32 System Synchronization ............................................................ 32 Clock ............................................................................................ 32 Enable Parity ............................................................................... 32 Temperature Sensor ................................................................... 32 Bridge Power-Down Switch...................................................... 33 Calibration................................................................................... 33 Digital Filter ................................................................................ 34 Sinc4 Filter (Chop Disabled) ..................................................... 34 Sinc3 Filter (Chop Disabled) ..................................................... 36 Chop Enabled (Sinc4 Filter) ...................................................... 38 Chop Enabled (Sinc3 Filter) ...................................................... 40 Summary of Filter Options ....................................................... 41 Grounding and Layout .............................................................. 42 Applications Information .............................................................. 43 Weigh Scales................................................................................ 43 Outline Dimensions ....................................................................... 44 Ordering Guide .......................................................................... 44 REVISION HISTORY 1/10—Revision 0: Initial Version |
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